Pretest: Single and Extension Ladder Safety

Always support and protect ladders from:

All of the above

When calculating the total weight the ladder is to support, you must include:

All of the above

If working near a source of electricity, which ladder material should be rejected?

Aluminum

What is the correct angle of inclination for single and extension ladders?

Approximately 75 degrees

A single ladder is virtually identical to:

Extension Ladder's Base Section

Single and extension ladders may be used by more than one person at a time.

False

The maximum extended length of an extension ladder is the same as its size.

False

What is the minimum overlap required for extension ladders taller than 48 feet?

6 feet

How is maximum work height established?

Adding your height and reach to the highest standing level

How many points-of-contact should you keep when climbing a single or extension ladder?

3

When accessing a roof, the top of the single or extension ladder must extend:

3 feet above the roof eave

Single Ladders are available in sizes up to:

30 feet

The rope and pulley of an extension ladder is used to perform what action?

Raise the fly section into place

Which part of an extension ladder locks the fly section into position?

Rung Locks

To ensure safe footing on penetrable surfaces, use:

Spur plates

If you feel tired or dizzy, or are prone to losing balance

Stay off the ladder

If climbing onto a roof, how should you exit onto the roof top?

Step sideways onto the roof

Ladders must not be placed in front of closed doors.

True

Over 160,000 people are injured using ladders each year as a result of not following safety precautions.

True

Single ladders are non-adjustable in length.

True